CA2142009A1 - Method of and apparatus for knead-extruding plastic resin by alternate extrusion using plurality of cylinders - Google Patents
Method of and apparatus for knead-extruding plastic resin by alternate extrusion using plurality of cylindersInfo
- Publication number
- CA2142009A1 CA2142009A1 CA2142009A CA2142009A CA2142009A1 CA 2142009 A1 CA2142009 A1 CA 2142009A1 CA 2142009 A CA2142009 A CA 2142009A CA 2142009 A CA2142009 A CA 2142009A CA 2142009 A1 CA2142009 A1 CA 2142009A1
- Authority
- CA
- Canada
- Prior art keywords
- extruding
- cleaning
- unit
- units
- kneading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000088 plastic resin Substances 0.000 title claims abstract description 8
- 238000001125 extrusion Methods 0.000 title description 4
- 238000004140 cleaning Methods 0.000 claims abstract description 31
- 238000004898 kneading Methods 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 230000002844 continuous effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000000543 intermediate Substances 0.000 description 2
- 241000725101 Clea Species 0.000 description 1
- 241001052209 Cylinder Species 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/27—Cleaning; Purging; Avoiding contamination
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
ABSTRACT A plastic resin kneading/extruding method using one auxiliary equipment including a screw drive source and a resin feed hopper, and a plurality of extruding units each including a cylinder with a feed opening and a screw and having their operations composed of an extruding step of kneading and extruding the plastic resin and a cleaning step of cleaning the screw and the cylinder, characterized in that the extruding step and the cleaning step are sequentially alternated for each of the extruding units. Thus, it is possible; to realize a kneading/extruding method and an apparatus therefor, which can accomplish synthetically continu-ous extruding operations without the extruding step zone being interrupted by the cleaning step zone and which can eliminate the defects of the prior art thereby to have a high extruding efficiency. 11
Description
, ~ 21~2.~0.~. .
;. `.. ~ .. .
..... . .
~, S P E C I F I C A T I O N
.
.
TITLE OF THE INVENTION
Plastic Resin Kneading/Extruding Method and Apparatus by Alternate Extrusions o-f Cylinders TECHNICAL FIELD
The present invention relates to a kneading/ex~
truding method and a kneading/extruding apparatus . . ,~, , , ;..
plastic resins. ; ~
. .
,.
BACKGROU~D ART ~ :
f ~ c The~kneading/extrud ~g-methQd a~d apparatus~
c ~ ~
plastic resins ~e-eom~ose~ of an extruding unit and auxillary equipment and-their-e~t-io~s.
The extruding unit is composed of a cylinder with ~ .: ;:
a feed opening and a screw for kneading and extruding resin. The extruding unit performs the ~neading/ex-:: , .
~ truding operation at an extruding s~e~ zone and the ; ~1 ,:;
cleaning operation at a cleaning s~p zone.
The auxiliary equipment is mainly composed off a ,~, $~
hopper and a~drive s~ree. The hopper feeds the resin --to the extruding unit from a feed.opening, and the drive s~urce drives the screw.
' :, ~ c~4J
:The operatio ~ continuously ~ir~ es i-n the se~
quence of -t-~e extruding ~ 2e~e,-~he cleaning ~}t~e~
~e~e and t~e-extruding~ ~e. ,~
Although the extruding/~operation should be~
it has to be ~nter~upte~ ~*-*h~ cleaning s~p-zone~
It is the ~efects of the method and apparatus of the -~:
prio~ art~th t the extruding efficiency ~u~t drop ~e~
G ~ ~ ,c;~
~ng~t-h-~e interruption. -~
.:.: . :, ~' The basic concept of the present invention is to : .
eliminate the interruption of the extruding step by comb~nin~ a plurality of extruding units with a -~
sing ~ iary equipment. ~ : `
h~r~ u~ f- ~he present invention i~ t~ ize : ::~
t~ ~kneading/extruding method and apparatus which`~re -~
ed-~o eliminat~ ~ defec~ of the prior art and ~ ~f ;.
e-~ ~G-~ ~-e~ ~?, .,~
have a high extruding efficiency by making -t-~e~
~h~t~ y continuous extruding operations possible.
DISCLOSURE OF TIIE INVENTION
:- :
.A pla~tic resin kneading/extruding method using :::::::
,","",~, onejauxiliary equipment including a screw drive s~rcc ,t " ,.. ..
and a resin feed hopper, and a pluralit~ of extruding :.:.`
units each including a cylinder with a feed opening and a screw and having~ era*~s~~smF~se~-~f an extruding step of kneading and extruding the plastic . :.:~:
, , , ~
2 :
' ; ~.
' ,'' ~`".:' : ,. :, ~t'~?'~' t~ " " ~ ~ ~ " " ~ "
~ ` 21~009 : :. ! .
. .
resin and a cleaning ~t~p of cleaning khe screw and La~
the cylinder~ The extruding u~ ts are disposed s~_re~*~g-~it~s-&s-~an have their positions interchange~ with their feed openings being always held upright. The extruding units are disposed ~r-~chrr~ that one of them is s~ in an ex~uding position for an extruding step and used as ~Q . . _ , "
active extruding linit whereas the remaining extrud-ing unit~other than the active extruding unit is ~ G !~
in a cleaning position foro~ cleaning st~p and~l~ed as -~
a cleaning unit. The active extruding unit has its position interchanged, when it is to be cleaned, by that of the cleaning unit.
~, .
BRIEF DESCRIPTION OF DRAWINGS -Fig. 1 and Fig. 2 a~e a~ ide elevation and a ~ C~Cc~
transverse section/of ~he-e~e-~f- two extruding units.
Fig. 3 is a transverse section of ~he-~s-e-~ four~ex-e~.~ L.CCd/,'~
~ruding uni~s. Fig. 4 is a side elevation of ~e-e~se-~c~ t~ ~e in which ~Ifeed openin~ ~ upright; Fig. 5,~ ~ ~6 and Fig. 8 are transverse sections of the sa~m~ s-e; and ~ J~s~
Fig. 7 is a side elevation of the same c~se.
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described in more . ~ 2 ~ ~ 2 .0 0 9 ~
. . . .
"
detail with reference to the accompanying drawings.
There is provi~* ~ iliary equipment which ~ -includes ~ screw drive source 18 and ~ resin feed hop~
per 19. There are provided a plurality of extruding units each of which includes a cylinder 1 with a feed opening and a screw 2. Numerals 3, 4, 5, 6 and 7 ;
designate the extruding units. The extruding units 4 and 5 are supported on a~revolver shaft 8 by support arms 9 in symmetry with respect to the revolver shaft 8. Likewise, in the case of Fig. 3, the extruding units 4, 5, 6 and 7 are held~' ~ s to have their positions interchanged when revolved on the re- ~.
volver shaft 8. These extruding units are arranged on a common circle around the revolver shaft 8, and their : . " :~:
number may be t~o or more. ,~
The revolver shaft 8 is revolved by a revolving ; `~
mechanism 10. :
.: .. .. ~ ~.
One of the(e~ruding units i~v~as ~ active :
extruding unit ~in the extrusion position/~ the ex- `
. ~ :
truding step. The remaining extruding units other than the active extruding unit 4)are us~-~s-t~
! . i ' ` I ~e~g,units ~, 6 and 7 in t-~e cleaning positions ~f~
cleaning s(~ë~; The active extruding unit 4 is re-volved, when it is to be cleaned, to have its position ~
, " :; ', :: ' interchanged by any~of the e}e~ig-units 5, 6 and 7. :~ ~:
' ': ,' -: `.
.~ 21~2.0Q9.
.
., .
The e,xtrudin~ unit-~ans~s_tQ~h~æ~ ~g~step~-(~(~,9~c~e, .
when~ ~ o the ex~ruding position. When an ex-truding unit ~ ~to ~e~cleaning posi ~ , its clea~n~step is ended by the next ~e~ ng. This ~4~
~ v~g can be ended within a short time period.~_~f Th~ p sit,io~f~interchange has~ n executed by ~he-r~-~v~ng. However, the ~osition intercha,nging ~ethod d~not b~ limitat~ but can be ~ ied by another method such as a parallel moving method, as taken in a horizontal direction. ~ , With reference to Figs. 4'to 8, here will be de-scribed the case in which the extruding units have their positions interchanged with their feed openings ,, ' being always held upright.
The extruding units 3 and 4 are supported on the revolver shaft 8 by the support arms 9 in symmetry with respect to the revolver shaft 8. These extruding units 3 and 4 are held in relation to have their posi-tions interchanged ~hen turned or revolved on the re-volver shaft 8. The revolver shaft 8 is revolved by , ' the revolving mechanism 10. One of the extruding :' units is used as the active extruding unit 3 in th~e ! ~:
extruding position of the extruding step. The remain-ing extruding unit other than the active extruding ' unit 3 is~ E~ the cleaning unit 4 in t~ê position ~;
~ , ~
2 1 ~ 2 0 ~ 9 ~ ~
~-t-he clean-l~g s~ep. The active extruding unit 3 is -revolved, when it is to be cleaned, to have its posi-tion interchanged with that of the cleaning unit 4.
When the extrud~ng uni~t~ ~ the extruding posi- ; :
~h C.~"~( CG- C~Y ~ ~
tion, it ~a~ er-s-~e-he extruding ~t~e~. The clean-ing uni~ nglreach~ the cleaning position *g~
~ea-~e~-~t-b~ e-~xt-r~v~. The resin is in-troduced from a feed opening 20. The position inter- --change is carried out with the feed openin,g 20 being always held upright. However, this mechanism is .,~
suitable but not limitative. One embodiment of this mechanism will be described with reference to the ~
drawings. :
The revolver shaft 8 has its leading end borne by a stationary cylinder 2i. One support arm 9 is fixed on the revolver shaft 8 whereas the other support arm :~
9 is not fixed on the stationary cylinder 21. An end- -~ ~
less band 11 such as a belt or chain is made to run ~ ` :
between the stationary cylinder 21 and the extruding -unit 3. ~The stationary cylinder 21 nd the extruding Cf ~ . ~ - ~ "", " ""
unit 3 are given the same diame~erf'~t-~-he-i-r--p~r~r~ns which the endless band 11 runs. The extruding units 3 and 4 are individually borne in a rotatable ~ ;
manner by the support arms 9. An endless band 12 is ;
made to run between the sta*ionary cylinder 21 and the 6 ;
',".
.. . . .
~ j'' '''', ,, ' ~ .' i ~ " , " ,~ ~ , ;, ."" ,, .~
21~2009 .. ~ .
extruding unit 4 The stationary cylinder 21 a,nd the extruding unit 4 are given the same diame~er a~h~ir p~r~s on which the endless band 12 runs. When the positions of the~extruding units 3 and 4 are inter-changed by P~l~ing the revolver shaft 8, the ~eed openings 30 are always held upright by the actions of th/e endless bands 11 and 12. Fig. 6 shows the case of extruding units 3, 4 and 5, in which the feed openings 20 are always held upright` by the actions of the endless bands. A similar effect can aIso be at-tained even if the number of extruding units is four or more.
Another embodiment is shown in Fig. 7 and Fig. 8.
A stationary wheel 15 is fixed on the stationary cyl-inder 21. Extruder wheels 13 and 14 are ~ixed on the -extrusion units 3 and 4, respectively. The extruder wheels 13 and 14 and the stationary wheel 15 may be ~-exemplified by frlction pulieys or gears. Their ex-.
ternal diameters are equalized in the case of the ~riction wheels, whereas the pitch circle diameters are equalized in the case of the gears. An inter-mediate wheel 16 is associated with the extruder wheel 13 and the stationary wheel 15 and has its shaft borne by the support arm 9. An in~ermediate wheel 17 is as-sociated with the extruder wheel 14 and the stationary .. : ..
,.~
. . ::: :::
7 ~ -~
::: - -: . :~:
2~2009 wheel 15 and has its shaft borne by the support arm 7. ~
When the positions of the extruding units 3 and 4 are ,;~-interchanged by revolving the revolver shaft 8, the feed openings 20 are always held upright by the ac- :
tions of the extruder wheels 13 and 14, the stationary wheel 15 and the intermediate wheels 16 and 17. When the support arm 9 is revolved by the revolver shaft 8, ; :
the active extruder unit 3 at the extruding step is ~:
interchanged by the cleaning unit 4 and is cleaned out to stand by until its position is interchanged with the position of the active extruding unit 3 by the next revolution. ;~
Thus, the interruption of the extruding step for cleaning the extruding unit can be substantially èli-minated to effect t ~ practically continuous extruding process. The feed openings are always positioned up- ~
right to facilitate the resin introduction and the ; ` ~:
cleaning operation and simplify the attachment and de-tachment of the auxiliary equipment.
I' ~ 'I ' , ,. , :' ~,;
"~. .' ,' ''~ ' ' ' '.
;. `.. ~ .. .
..... . .
~, S P E C I F I C A T I O N
.
.
TITLE OF THE INVENTION
Plastic Resin Kneading/Extruding Method and Apparatus by Alternate Extrusions o-f Cylinders TECHNICAL FIELD
The present invention relates to a kneading/ex~
truding method and a kneading/extruding apparatus . . ,~, , , ;..
plastic resins. ; ~
. .
,.
BACKGROU~D ART ~ :
f ~ c The~kneading/extrud ~g-methQd a~d apparatus~
c ~ ~
plastic resins ~e-eom~ose~ of an extruding unit and auxillary equipment and-their-e~t-io~s.
The extruding unit is composed of a cylinder with ~ .: ;:
a feed opening and a screw for kneading and extruding resin. The extruding unit performs the ~neading/ex-:: , .
~ truding operation at an extruding s~e~ zone and the ; ~1 ,:;
cleaning operation at a cleaning s~p zone.
The auxiliary equipment is mainly composed off a ,~, $~
hopper and a~drive s~ree. The hopper feeds the resin --to the extruding unit from a feed.opening, and the drive s~urce drives the screw.
' :, ~ c~4J
:The operatio ~ continuously ~ir~ es i-n the se~
quence of -t-~e extruding ~ 2e~e,-~he cleaning ~}t~e~
~e~e and t~e-extruding~ ~e. ,~
Although the extruding/~operation should be~
it has to be ~nter~upte~ ~*-*h~ cleaning s~p-zone~
It is the ~efects of the method and apparatus of the -~:
prio~ art~th t the extruding efficiency ~u~t drop ~e~
G ~ ~ ,c;~
~ng~t-h-~e interruption. -~
.:.: . :, ~' The basic concept of the present invention is to : .
eliminate the interruption of the extruding step by comb~nin~ a plurality of extruding units with a -~
sing ~ iary equipment. ~ : `
h~r~ u~ f- ~he present invention i~ t~ ize : ::~
t~ ~kneading/extruding method and apparatus which`~re -~
ed-~o eliminat~ ~ defec~ of the prior art and ~ ~f ;.
e-~ ~G-~ ~-e~ ~?, .,~
have a high extruding efficiency by making -t-~e~
~h~t~ y continuous extruding operations possible.
DISCLOSURE OF TIIE INVENTION
:- :
.A pla~tic resin kneading/extruding method using :::::::
,","",~, onejauxiliary equipment including a screw drive s~rcc ,t " ,.. ..
and a resin feed hopper, and a pluralit~ of extruding :.:.`
units each including a cylinder with a feed opening and a screw and having~ era*~s~~smF~se~-~f an extruding step of kneading and extruding the plastic . :.:~:
, , , ~
2 :
' ; ~.
' ,'' ~`".:' : ,. :, ~t'~?'~' t~ " " ~ ~ ~ " " ~ "
~ ` 21~009 : :. ! .
. .
resin and a cleaning ~t~p of cleaning khe screw and La~
the cylinder~ The extruding u~ ts are disposed s~_re~*~g-~it~s-&s-~an have their positions interchange~ with their feed openings being always held upright. The extruding units are disposed ~r-~chrr~ that one of them is s~ in an ex~uding position for an extruding step and used as ~Q . . _ , "
active extruding linit whereas the remaining extrud-ing unit~other than the active extruding unit is ~ G !~
in a cleaning position foro~ cleaning st~p and~l~ed as -~
a cleaning unit. The active extruding unit has its position interchanged, when it is to be cleaned, by that of the cleaning unit.
~, .
BRIEF DESCRIPTION OF DRAWINGS -Fig. 1 and Fig. 2 a~e a~ ide elevation and a ~ C~Cc~
transverse section/of ~he-e~e-~f- two extruding units.
Fig. 3 is a transverse section of ~he-~s-e-~ four~ex-e~.~ L.CCd/,'~
~ruding uni~s. Fig. 4 is a side elevation of ~e-e~se-~c~ t~ ~e in which ~Ifeed openin~ ~ upright; Fig. 5,~ ~ ~6 and Fig. 8 are transverse sections of the sa~m~ s-e; and ~ J~s~
Fig. 7 is a side elevation of the same c~se.
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described in more . ~ 2 ~ ~ 2 .0 0 9 ~
. . . .
"
detail with reference to the accompanying drawings.
There is provi~* ~ iliary equipment which ~ -includes ~ screw drive source 18 and ~ resin feed hop~
per 19. There are provided a plurality of extruding units each of which includes a cylinder 1 with a feed opening and a screw 2. Numerals 3, 4, 5, 6 and 7 ;
designate the extruding units. The extruding units 4 and 5 are supported on a~revolver shaft 8 by support arms 9 in symmetry with respect to the revolver shaft 8. Likewise, in the case of Fig. 3, the extruding units 4, 5, 6 and 7 are held~' ~ s to have their positions interchanged when revolved on the re- ~.
volver shaft 8. These extruding units are arranged on a common circle around the revolver shaft 8, and their : . " :~:
number may be t~o or more. ,~
The revolver shaft 8 is revolved by a revolving ; `~
mechanism 10. :
.: .. .. ~ ~.
One of the(e~ruding units i~v~as ~ active :
extruding unit ~in the extrusion position/~ the ex- `
. ~ :
truding step. The remaining extruding units other than the active extruding unit 4)are us~-~s-t~
! . i ' ` I ~e~g,units ~, 6 and 7 in t-~e cleaning positions ~f~
cleaning s(~ë~; The active extruding unit 4 is re-volved, when it is to be cleaned, to have its position ~
, " :; ', :: ' interchanged by any~of the e}e~ig-units 5, 6 and 7. :~ ~:
' ': ,' -: `.
.~ 21~2.0Q9.
.
., .
The e,xtrudin~ unit-~ans~s_tQ~h~æ~ ~g~step~-(~(~,9~c~e, .
when~ ~ o the ex~ruding position. When an ex-truding unit ~ ~to ~e~cleaning posi ~ , its clea~n~step is ended by the next ~e~ ng. This ~4~
~ v~g can be ended within a short time period.~_~f Th~ p sit,io~f~interchange has~ n executed by ~he-r~-~v~ng. However, the ~osition intercha,nging ~ethod d~not b~ limitat~ but can be ~ ied by another method such as a parallel moving method, as taken in a horizontal direction. ~ , With reference to Figs. 4'to 8, here will be de-scribed the case in which the extruding units have their positions interchanged with their feed openings ,, ' being always held upright.
The extruding units 3 and 4 are supported on the revolver shaft 8 by the support arms 9 in symmetry with respect to the revolver shaft 8. These extruding units 3 and 4 are held in relation to have their posi-tions interchanged ~hen turned or revolved on the re-volver shaft 8. The revolver shaft 8 is revolved by , ' the revolving mechanism 10. One of the extruding :' units is used as the active extruding unit 3 in th~e ! ~:
extruding position of the extruding step. The remain-ing extruding unit other than the active extruding ' unit 3 is~ E~ the cleaning unit 4 in t~ê position ~;
~ , ~
2 1 ~ 2 0 ~ 9 ~ ~
~-t-he clean-l~g s~ep. The active extruding unit 3 is -revolved, when it is to be cleaned, to have its posi-tion interchanged with that of the cleaning unit 4.
When the extrud~ng uni~t~ ~ the extruding posi- ; :
~h C.~"~( CG- C~Y ~ ~
tion, it ~a~ er-s-~e-he extruding ~t~e~. The clean-ing uni~ nglreach~ the cleaning position *g~
~ea-~e~-~t-b~ e-~xt-r~v~. The resin is in-troduced from a feed opening 20. The position inter- --change is carried out with the feed openin,g 20 being always held upright. However, this mechanism is .,~
suitable but not limitative. One embodiment of this mechanism will be described with reference to the ~
drawings. :
The revolver shaft 8 has its leading end borne by a stationary cylinder 2i. One support arm 9 is fixed on the revolver shaft 8 whereas the other support arm :~
9 is not fixed on the stationary cylinder 21. An end- -~ ~
less band 11 such as a belt or chain is made to run ~ ` :
between the stationary cylinder 21 and the extruding -unit 3. ~The stationary cylinder 21 nd the extruding Cf ~ . ~ - ~ "", " ""
unit 3 are given the same diame~erf'~t-~-he-i-r--p~r~r~ns which the endless band 11 runs. The extruding units 3 and 4 are individually borne in a rotatable ~ ;
manner by the support arms 9. An endless band 12 is ;
made to run between the sta*ionary cylinder 21 and the 6 ;
',".
.. . . .
~ j'' '''', ,, ' ~ .' i ~ " , " ,~ ~ , ;, ."" ,, .~
21~2009 .. ~ .
extruding unit 4 The stationary cylinder 21 a,nd the extruding unit 4 are given the same diame~er a~h~ir p~r~s on which the endless band 12 runs. When the positions of the~extruding units 3 and 4 are inter-changed by P~l~ing the revolver shaft 8, the ~eed openings 30 are always held upright by the actions of th/e endless bands 11 and 12. Fig. 6 shows the case of extruding units 3, 4 and 5, in which the feed openings 20 are always held upright` by the actions of the endless bands. A similar effect can aIso be at-tained even if the number of extruding units is four or more.
Another embodiment is shown in Fig. 7 and Fig. 8.
A stationary wheel 15 is fixed on the stationary cyl-inder 21. Extruder wheels 13 and 14 are ~ixed on the -extrusion units 3 and 4, respectively. The extruder wheels 13 and 14 and the stationary wheel 15 may be ~-exemplified by frlction pulieys or gears. Their ex-.
ternal diameters are equalized in the case of the ~riction wheels, whereas the pitch circle diameters are equalized in the case of the gears. An inter-mediate wheel 16 is associated with the extruder wheel 13 and the stationary wheel 15 and has its shaft borne by the support arm 9. An in~ermediate wheel 17 is as-sociated with the extruder wheel 14 and the stationary .. : ..
,.~
. . ::: :::
7 ~ -~
::: - -: . :~:
2~2009 wheel 15 and has its shaft borne by the support arm 7. ~
When the positions of the extruding units 3 and 4 are ,;~-interchanged by revolving the revolver shaft 8, the feed openings 20 are always held upright by the ac- :
tions of the extruder wheels 13 and 14, the stationary wheel 15 and the intermediate wheels 16 and 17. When the support arm 9 is revolved by the revolver shaft 8, ; :
the active extruder unit 3 at the extruding step is ~:
interchanged by the cleaning unit 4 and is cleaned out to stand by until its position is interchanged with the position of the active extruding unit 3 by the next revolution. ;~
Thus, the interruption of the extruding step for cleaning the extruding unit can be substantially èli-minated to effect t ~ practically continuous extruding process. The feed openings are always positioned up- ~
right to facilitate the resin introduction and the ; ` ~:
cleaning operation and simplify the attachment and de-tachment of the auxiliary equipment.
I' ~ 'I ' , ,. , :' ~,;
"~. .' ,' ''~ ' ' ' '.
Claims (3)
1. A plastic resin kneading/extruding method using one auxiliary equipment including a screw drive source and a resin feed hopper, and a plurality of extruding units each including a cylinder with a feed opening and a screw and having their operations composed of an extruding step of kneading and extruding the plastic resin and a cleaning step of cleaning the screw and the cylinder, characterized in that the extruding step and the cleaning step are sequentially alternated for each of the extruding units.
2. A plastic resin kneading/extruding apparatus com-prising extruding units disposed in such relative po-sitions that one of them is set in an extruding posi-tion for an extruding step and used as an active ex-truding unit whereas the remaining extruding unit other than the active extruding unit is set in a cleaning position for a cleaning step and used as a cleaning unit, characterized in that the active ex-truding unit has its position interchanged, when it is to be cleaned, by that of the cleaning unit.
3. A plastic resin kneading/extruding apparatus as set forth in the preceding claim, characterized in that the extruding units are disposed in such relative positions as can have their positions interchanged with their feed openings being always held upright.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4-253392 | 1992-08-10 | ||
| JP25339292 | 1992-08-10 | ||
| JP4313593 | 1993-01-25 | ||
| JP5-43135 | 1993-01-25 | ||
| JP12647993 | 1993-04-15 | ||
| JP5-126479 | 1993-04-15 | ||
| PCT/JP1993/001000 WO1994003319A1 (en) | 1992-08-10 | 1993-07-19 | Method of and apparatus for knead-extruding plastic resin by alternate extrusion using plurality of cylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2142009A1 true CA2142009A1 (en) | 1994-02-17 |
Family
ID=27291446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2142009A Abandoned CA2142009A1 (en) | 1992-08-10 | 1993-07-19 | Method of and apparatus for knead-extruding plastic resin by alternate extrusion using plurality of cylinders |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US5498380A (en) |
| EP (1) | EP0658413B1 (en) |
| KR (1) | KR100251902B1 (en) |
| AT (1) | ATE186010T1 (en) |
| AU (1) | AU672216B2 (en) |
| BR (1) | BR9306863A (en) |
| CA (1) | CA2142009A1 (en) |
| DE (1) | DE69326898T2 (en) |
| DK (1) | DK0658413T3 (en) |
| ES (1) | ES2141161T3 (en) |
| GR (1) | GR3032491T3 (en) |
| NZ (1) | NZ254239A (en) |
| OA (1) | OA10003A (en) |
| PL (1) | PL172344B1 (en) |
| RU (1) | RU2122494C1 (en) |
| WO (1) | WO1994003319A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004040186B3 (en) * | 2004-08-19 | 2006-04-27 | Leistritz Extrusionstechnik Gmbh | Device for changing an extrusion cylinder of an extruder |
| US20090258100A1 (en) * | 2008-04-10 | 2009-10-15 | Good Earth Tools, Inc. | Thermal Growth Compensating Extrusion Screw Assembly |
| US20090258103A1 (en) * | 2008-04-10 | 2009-10-15 | Good Earth Tools, Inc. | Multi-Head Extruder Assembly |
| US8579623B2 (en) * | 2008-04-10 | 2013-11-12 | Edward Williams | Extruder stabilizer assembly |
| US8137092B2 (en) * | 2008-05-22 | 2012-03-20 | Edward Williams | Support assembly for an extruder |
| CN112045883B (en) * | 2020-08-28 | 2022-09-09 | 东莞市信诚硅胶电子有限公司 | Novel plasticator of rubber can overturn automatically |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU28825A1 (en) * | 1939-02-06 | 1900-01-01 | ||
| US2366417A (en) * | 1942-03-30 | 1945-01-02 | Hydraulic Dev Corp Inc | Continuous extrusion molding of plastics |
| US2683895A (en) * | 1950-07-21 | 1954-07-20 | Gen Motors Corp | Extruder |
| DE1168061B (en) * | 1961-06-09 | 1964-04-16 | Hehl & Soehne Arburg Masch | Injection unit for an injection molding machine that processes thermoplastics |
| FR2056631A5 (en) * | 1969-08-16 | 1971-05-14 | Werner & Pfleiderer | |
| US3748074A (en) * | 1969-10-17 | 1973-07-24 | H Nitta | Apparatus for plasticizing thermoplastic synthetic resin |
| NL7302359A (en) * | 1973-02-20 | 1974-08-22 | ||
| JPS5648500Y2 (en) * | 1978-08-16 | 1981-11-12 | ||
| JPS5819463B2 (en) * | 1980-10-31 | 1983-04-18 | 菱屋精工株式会社 | Heating cylinder switching type injection molding machine |
| JPS58102737A (en) * | 1981-12-15 | 1983-06-18 | Toshiba Mach Co Ltd | Automatic-exchanging device for heating cylinder unit of injection molder |
| US4411532A (en) * | 1982-01-04 | 1983-10-25 | Usm Corporation | Rotary processor |
| JPS599033A (en) * | 1982-07-08 | 1984-01-18 | Toshiba Mach Co Ltd | Automatic exchange equipment of heating cylinder unit in injection molding machine |
| JPS5989130A (en) * | 1982-11-15 | 1984-05-23 | Sumitomo Heavy Ind Ltd | Automatic exchanger for screw cylinder unit |
| DE3341282C2 (en) * | 1983-11-15 | 1986-09-25 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | Twin screw extruder with a material feed device |
| JPS61274833A (en) * | 1985-05-28 | 1986-12-05 | Hino Motors Ltd | Automatic tool changer |
| EP0305692B1 (en) * | 1987-09-02 | 1992-05-06 | HERMANN BERSTORFF Maschinenbau GmbH | Process for the continuous production of rubber mixtures and other filler-containing polymer-based mixtures |
| JPH0637085B2 (en) * | 1989-10-31 | 1994-05-18 | バンドー化学株式会社 | Molding machine for rubber belt manufacturing |
| US5156861A (en) * | 1990-05-24 | 1992-10-20 | Hitachi Zosen Trading & Manufacturing Co., Ltd. | Washing apparatus of a screw for extruders |
-
1993
- 1993-07-19 AT AT93916184T patent/ATE186010T1/en not_active IP Right Cessation
- 1993-07-19 WO PCT/JP1993/001000 patent/WO1994003319A1/en active IP Right Grant
- 1993-07-19 DK DK93916184T patent/DK0658413T3/en active
- 1993-07-19 PL PL93307352A patent/PL172344B1/en unknown
- 1993-07-19 DE DE69326898T patent/DE69326898T2/en not_active Expired - Fee Related
- 1993-07-19 AU AU45840/93A patent/AU672216B2/en not_active Ceased
- 1993-07-19 EP EP93916184A patent/EP0658413B1/en not_active Expired - Lifetime
- 1993-07-19 ES ES93916184T patent/ES2141161T3/en not_active Expired - Lifetime
- 1993-07-19 CA CA2142009A patent/CA2142009A1/en not_active Abandoned
- 1993-07-19 NZ NZ254239A patent/NZ254239A/en unknown
- 1993-07-19 BR BR9306863A patent/BR9306863A/en not_active IP Right Cessation
- 1993-07-19 KR KR1019940704563A patent/KR100251902B1/en not_active IP Right Cessation
-
1994
- 1994-02-17 RU RU95106984A patent/RU2122494C1/en active
-
1995
- 1995-01-27 US US08/373,276 patent/US5498380A/en not_active Expired - Fee Related
- 1995-02-10 OA OA60610A patent/OA10003A/en unknown
-
2000
- 2000-01-27 GR GR20000400185T patent/GR3032491T3/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0658413A4 (en) | 1995-07-19 |
| RU95106984A (en) | 1997-01-20 |
| ATE186010T1 (en) | 1999-11-15 |
| US5498380A (en) | 1996-03-12 |
| EP0658413B1 (en) | 1999-10-27 |
| BR9306863A (en) | 1998-12-08 |
| OA10003A (en) | 1996-03-29 |
| DK0658413T3 (en) | 2000-01-17 |
| WO1994003319A1 (en) | 1994-02-17 |
| DE69326898T2 (en) | 2000-04-27 |
| EP0658413A1 (en) | 1995-06-21 |
| DE69326898D1 (en) | 1999-12-02 |
| RU2122494C1 (en) | 1998-11-27 |
| AU672216B2 (en) | 1996-09-26 |
| AU4584093A (en) | 1994-03-03 |
| KR100251902B1 (en) | 2000-04-15 |
| PL307352A1 (en) | 1995-05-15 |
| ES2141161T3 (en) | 2000-03-16 |
| NZ254239A (en) | 1997-01-29 |
| PL172344B1 (en) | 1997-09-30 |
| GR3032491T3 (en) | 2000-05-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |